Filter head



FIG. 1 is a top plan view of a filter head showing our new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is an end elevational view thereof;

FIG. 5 is an elevational view taken from the side opposite that shown in FIG. 2; and

FIG. 6 is an elevational view taken from the end opposite that shown in FIG. 4. 

The ornamental design for a filter head, as shown. 